As someone with high myopia, I am very much familiar with the word Blur.
Myopia is defined as inability of the eyes to focus on distance far away. At the early stage, a far away distance is pretty far, like the whiteboard, or road sign. As myopia progress, the far away distance got closer, such as TV, and even book. At my current myopia stage, the far away distance is as far as 7 cm away.
In a practical world, without my glasses, everything is a blur. Above is how I see without glasses at night. If I were to walk without glasses, I will need to put my hand in the front in order not to bump into anything.